Dump car structure



3 Sheets-Sheefl lv Aug. 4, 1936. E. c. JACKSON DUMP CAR STRUCTURE Filed Deo. 5, 1931 E. c. JACKSON 2,049,612

Aug. 4, 1936.

' DUMP CAR STRUCTURE 5 Shees-Sheerl 2 Filed Dec. 5, 1951 @ifo/"neg 3 Sheets-Sheet 3 E. C. JACKSON DUMP CAR STRUCTURE Filed Dec. 5, 1951 Aug. 4, 1936.

w m6. Q Z7 Patented Aug.l 4, 1936 DUMP CAR STRUCTURE Edwin C. Jackson, St. Louis, Mogwassignor to General VSteel Castings Corporation, Granite City/,111., a lcorporation of'Delaware f Application December 5, 1931, Serial No.-57 9,307 3 claims. (01.51057-4-271) I This invention relates to railway rolling stock and consists in a novel construction of dump cars of the tilting body type. Y p

4An object of the invention is `to provide a main 5 underframe for a dump car which will be simpler 'and more durable than similar structures-previously in use.

Another object is to avoid 'the necessity of mounting the main `air Vreservoir upon brackets l projecting from a Wall of the under-frame by forming the reservoir within the center sill casting ofthe main under-frame;l v 1 Another object is to combine the body tilting cylinders with the underframe toimprove spacl ing conditionsy and to strengthen the structure.

These general objects and other more detailed t objects are attained in the structure illustrated `in the accompanying drawings, in which- Figure 1 shows at the right a top view of the 2O main' under-frame andV at the left aportion of the under-framing of the car body mounted thereon.' Y Figure 2 is in part a side View, and in part a vertical longitudinal section taken on line 2 2 of 25 Figure 1.

Figure 3 is a Vertical transverse section taken on a line 3-3 of Figure 1.

Figures 4 and 5 are similar sections taken on corresponding section lines of Figure l and show- 30 ing in broken lines the body in tilted position.

Figure 6 is a detailed side View and vertical longitudinal section on an enlarged scale taken on a line E-B of Figure 1.

Figure 7 is a top View on an enlarged scale of the main under-frame structure adjacent the dumping cylinders.

The main under-frame portion of the structure is in many respects similar to that shown and described in Patent No. 1,620,839, issued March .1,0 15, 1927 to W. M. Sheehan, and preferably comprises an integral structure including an elongated boX section center sill member I having flanged draft sills 2 at each end, the latter being preferably provided with Vintegral draft lugs 3. 45 The inner ends of the draft sills diverge sidewardly and merge with bolsters 4, each having a horizontal bottom web 4a, top webs 4b sloping downwardly from each side of the center sill, and spaced upright webs 4c. Located at each end of 5;@ the bolsters are housings 5 for receiving body stop springs 6.

The box-shaped center sill extends through each bolster 4 and forms a reinforcing structure 1, arranged to be mounted upon the usual center 55 plate elements (not shown) on truck 8.

Formed integrally with the center sill between bolsters 4 is a brake cylinder 9 carried by diagonal ribs I which withthe projecting lower'web of the sill form a three-sided hollow cylindersupport bracket. y f

The main under-frame also includesV integral upstanding hinge elements II, located at inter- .vals along the center sill, and body tilting shaft brackets I2. The brackets are disposedain pairs along the under-frame, and at each side of `the 10 center sill substantially in alignment' ,withthe upright side walls thereof. Each transverse pai of brackets I2 is connected by a rib I3.

Dumping cylinders are formed integral with the center sill, the side Wall 'of each cylinder 15 merging with the adjacent'upright wall of the center sill whereby the sill wall forms Ya' part of the cylinder wal1, these portions of the walls being of uniform thickness to avoid duplication of metal at this point. The head H ofeach cyl- 1,20 inder is removable and extends radiallybeyond the lcylinder wall inthe usualmanner.- Theadjacent portionA ofthe vertical wall of the center sill is recessed lfor a short distance, as indicated at R, to accommodate the corresponding portion 25 of the cylinder head.

The cylinders 25 are provided with pistons 26 having body engaging extensions 21, the latter being bifurcated at the top to form tripping arms 28. Located within the box section center sill and preferably, but not necessarily, between cylinders 25, are a pair of spaced, dome-shaped partitions forming with the center sill webs a main air reservoir 29.

The car body framing comprises a one piece casting including side sills I4, end sills I5, all of channel section, and intermediate longitudinal sills I6, center sills I1, and transoms I8, all of I section. Depending from the center sills I1 at intervals are body hinge elements I9 for coop- 40 erating with under-frame hinge elements II to support the body. Dumping cams 25 include lobes 20a and 20h. Side bearing arms 2I and body stop pads 22 are located immediately beneath the intersections of the associated transoms I8 and the longitudinal members I 6 and are integral therewith. Renewable wear plates 22a, are applied to the faces of the pads 22.

The body structure is preferably provided with reinforced swinging side doors 36 and suitable 50 hinge and latch elements (not sho-Wn) The body tilting mechanism, portions of which are illustrated in Figures 4 and 5, is old and in itself does not constitute the present invention. Briefly described, this mechanism includes coordinating longitudinal shafts 23 extending along the under-frame from bolster to bolster and supported in brackets I2. Secured to these shafts between corresponding transverse pairs of brackets I2 are trip dogs 24, each located in the path of the corresponding tripping arm 28. Attached to the shafts 23, adjacent each side bearing arm 2|, is a weighted lever 30 which is connected through links 3| and 32, with the yside bearing support member 33 on the opposite side of the sill, swingably mounted on lugs 35 adjacent housing 5 at the end of the bolster.

In operation of the dumping mechanism,V air is forced into the pair of dumping cylinders on either side tol tilt the body. As arms 28 move upwardly and engage the corresponding dogs 24, shafts 23 on that side are rotated causing the side bearing supports 33 connected therewith to be swung sidewardly by means of mechanism not shown. The swung positions of supports 33 are shown in broken lines in Figure 5. Continued upward movement of the operating pistons causes extensions 21 to engage the lower lobes 20a. of the corresponding cams 20, to effect the tilting of the body. The side bearing arms Von the descending side of the body pass thro-ugh openings 4d in the top webs 4b of bolsters 4.

In the extreme tilted position, the wear plates 22a on stop pads 22 on the lower side of the body engage buffers 34 yieldingly supported on springs 6 in housings 5, and, as indicated in broken lines on the left hand side of Figure 4. the higher lobes 2Gb, of cams 20, engage the corresponding operating piston extensions 21.

To return the body to horizontal, air is simultaneously released from the lled cylinders and admitted to the emptied cylinders. As the emptied cylinders are lled, their tripping arms 28 strike the corresponding dogs 24, causing the bearing supports 33 on each side to be returned to normal position. v

Obviously, the invention is not limited to the exact details of the structures illustrated and described. For instance, the general shape of the main under-frame, as well as the body under-frame, are not essential. Moreover, the various hinge elements and brackets may be varied as to shaping and position, and as to the particular number of the elements used, without departing from the spirit of the invention. The exclusive use of vall such modifications as come within the scope of the appended claims is contemplated.

What is claimed is:

l. A railway dump car integral structure including'a center sill having an upright web and a bottom web, and an upwardly disposed body tilting cylinder merging with said upright web, said webs and the cylinder wall being of uniform thickness to facilitate casting and said bottom web extending around and merging with a portion of said cylinder and bracing the same.

2. A railway vehicle underframe center sill of -general rectangular section, and a fluid cylinder extending along a wall thereof and with its wall merging with said sill wall, a portion of said sill wall adjacent an end of said cylinder being recessed to permit application to said cylinder of a cylinder head projecting radially of the cylinder beyond thermerged portions of said walls shaped to extend outwardly of said merged walls.

3. A railway dump car integral structure including a sill having anupright web and top and bottom webs. and a body tilting cylinder merging with said upright web, a portion of the web'forming a portion of the cylinder wall, the top of said cylinder being beneath said sill top web and Yportions of said sill upright and top webs adjacent said cylinder being recessed to accommodate a removable cylinder head which projects beyond the side wall of the cylinder to permit application of the head to the portion of the cylinder wall which merges with said sill upright web.

EDWIN C. JACKSON. 

